Well, I had to go back to their website and take a 2nd look. The first time I looked, I actually struggled to find one with a lock since I'd never seen one before. Now I realize that they do not consider this a safety. If you look at the specs, which is what I was doing that first time around, they will say "NONE" under safety. But just now, I looked at the photos of the various revolvers and you are right, they all show the telltale hole just above the cylinder release. Looking at the Mod 19, nowhere in either the specs or the description to they mention this interlock, yet the gun clearly shows it has that feature in the photos. It's almost like they are ashamed of this feature.
